#include<bits/stdc++.h>
using namespace std;
int main(){
    freopen("employ.in","r",stdin);
    freopen("employ.out","w",stdout);
    ios::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    cout<<0<<"\n";
    return 0;
}
/*
4 2
xabcx xadex
ad cd
bc de
aa bb
xabcx xadex
aaaa bbbb
*/